Tests

chore: inline more `AccountInfo` fns and add docs (#1819) #13

Job	Run time
test stable --no-default-features	2m 52s
test stable	2m 30s
check	20s
test stable --all-features	2m 7s
check serde	22s
test beta --no-default-features	1m 59s
check std	19s
test beta	2m 9s
test beta --all-features	2m 14s
test nightly --no-default-features	1m 53s
check no_std	30s
test nightly	1m 56s
check no_std kzg-rs	36s
clippy	1m 14s
test nightly --all-features	1m 58s
docs	1m 10s
fmt	5s
TyposCheck	5s
	24m 19s

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